text: The house is made up of 24 layers of concrete, "printed" by a machine that sprays one layer on top of the other, then completes other stages such as the roof?
classes:  No, applying 3D printing technology has been able to create many parts such as roofs.  Also, applying 3D printing technology has been able to create many parts such as roofs.  Yes, applying 3D printing technology has been able to create many parts such as roofs.